21911940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 72072000

約数和(自身を除く): 50160060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 43, 45, 57, 60, 76, 86, 90, 95, 114, 129, 149, 171, 172, 180, 190, 215, 228, 258, 285, 298, 342, 380, 387, 430, 447, 516, 570, 596, 645, 684, 745, 774, 817, 855, 860, 894, 1140, 1290, 1341, 1490, 1548, 1634, 1710, 1788, 1935, 2235, 2451, 2580, 2682, 2831, 2980, 3268, 3420, 3870, 4085, 4470, 4902, 5364, 5662, 6407, 6705, 7353, 7740, 8170, 8493, 8940, 9804, 11324, 12255, 12814, 13410, 14155, 14706, 16340, 16986, 19221, 24510, 25479, 25628, 26820, 28310, 29412, 32035, 33972, 36765, 38442, 42465, 49020, 50958, 56620, 57663, 64070, 73530, 76884, 84930, 96105, 101916, 115326, 121733, 127395, 128140, 147060, 169860, 192210, 230652, 243466, 254790, 288315, 365199, 384420, 486932, 509580, 576630, 608665, 730398, 1095597, 1153260, 1217330, 1460796, 1825995, 2191194, 2434660, 3651990, 4382388, 5477985, 7303980, 10955970, 21911940]

約数ペア:

[(1, 21911940), (2, 10955970), (3, 7303980), (4, 5477985), (5, 4382388), (6, 3651990), (9, 2434660), (10, 2191194), (12, 1825995), (15, 1460796), (18, 1217330), (19, 1153260), (20, 1095597), (30, 730398), (36, 608665), (38, 576630), (43, 509580), (45, 486932), (57, 384420), (60, 365199), (76, 288315), (86, 254790), (90, 243466), (95, 230652), (114, 192210), (129, 169860), (149, 147060), (171, 128140), (172, 127395), (180, 121733), (190, 115326), (215, 101916), (228, 96105), (258, 84930), (285, 76884), (298, 73530), (342, 64070), (380, 57663), (387, 56620), (430, 50958), (447, 49020), (516, 42465), (570, 38442), (596, 36765), (645, 33972), (684, 32035), (745, 29412), (774, 28310), (817, 26820), (855, 25628), (860, 25479), (894, 24510), (1140, 19221), (1290, 16986), (1341, 16340), (1490, 14706), (1548, 14155), (1634, 13410), (1710, 12814), (1788, 12255), (1935, 11324), (2235, 9804), (2451, 8940), (2580, 8493), (2682, 8170), (2831, 7740), (2980, 7353), (3268, 6705), (3420, 6407), (3870, 5662), (4085, 5364), (4470, 4902)]