21749490

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:141

約数の個数: 192

約数和(自身を含む): 71884800

約数和(自身を除く): 50135310

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 23, 30, 35, 38, 42, 45, 46, 57, 63, 69, 70, 79, 90, 95, 105, 114, 115, 126, 133, 138, 158, 161, 171, 190, 207, 210, 230, 237, 266, 285, 315, 322, 342, 345, 395, 399, 414, 437, 474, 483, 553, 570, 630, 665, 690, 711, 790, 798, 805, 855, 874, 966, 1035, 1106, 1185, 1197, 1311, 1330, 1422, 1449, 1501, 1610, 1659, 1710, 1817, 1995, 2070, 2185, 2370, 2394, 2415, 2622, 2765, 2898, 3002, 3059, 3318, 3555, 3634, 3933, 3990, 4370, 4503, 4830, 4977, 5451, 5530, 5985, 6118, 6555, 7110, 7245, 7505, 7866, 8295, 9006, 9085, 9177, 9954, 10507, 10902, 11970, 12719, 13110, 13509, 14490, 15010, 15295, 16353, 16590, 18170, 18354, 19665, 21014, 22515, 24885, 25438, 27018, 27255, 27531, 30590, 31521, 32706, 34523, 38157, 39330, 45030, 45885, 49770, 52535, 54510, 55062, 63042, 63595, 67545, 69046, 76314, 81765, 91770, 94563, 103569, 105070, 114471, 127190, 135090, 137655, 157605, 163530, 172615, 189126, 190785, 207138, 228942, 241661, 275310, 310707, 315210, 345230, 381570, 472815, 483322, 517845, 572355, 621414, 724983, 945630, 1035690, 1144710, 1208305, 1449966, 1553535, 2174949, 2416610, 3107070, 3624915, 4349898, 7249830, 10874745, 21749490]

約数ペア:

[(1, 21749490), (2, 10874745), (3, 7249830), (5, 4349898), (6, 3624915), (7, 3107070), (9, 2416610), (10, 2174949), (14, 1553535), (15, 1449966), (18, 1208305), (19, 1144710), (21, 1035690), (23, 945630), (30, 724983), (35, 621414), (38, 572355), (42, 517845), (45, 483322), (46, 472815), (57, 381570), (63, 345230), (69, 315210), (70, 310707), (79, 275310), (90, 241661), (95, 228942), (105, 207138), (114, 190785), (115, 189126), (126, 172615), (133, 163530), (138, 157605), (158, 137655), (161, 135090), (171, 127190), (190, 114471), (207, 105070), (210, 103569), (230, 94563), (237, 91770), (266, 81765), (285, 76314), (315, 69046), (322, 67545), (342, 63595), (345, 63042), (395, 55062), (399, 54510), (414, 52535), (437, 49770), (474, 45885), (483, 45030), (553, 39330), (570, 38157), (630, 34523), (665, 32706), (690, 31521), (711, 30590), (790, 27531), (798, 27255), (805, 27018), (855, 25438), (874, 24885), (966, 22515), (1035, 21014), (1106, 19665), (1185, 18354), (1197, 18170), (1311, 16590), (1330, 16353), (1422, 15295), (1449, 15010), (1501, 14490), (1610, 13509), (1659, 13110), (1710, 12719), (1817, 11970), (1995, 10902), (2070, 10507), (2185, 9954), (2370, 9177), (2394, 9085), (2415, 9006), (2622, 8295), (2765, 7866), (2898, 7505), (3002, 7245), (3059, 7110), (3318, 6555), (3555, 6118), (3634, 5985), (3933, 5530), (3990, 5451), (4370, 4977), (4503, 4830)]