20858010

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:132

約数の個数: 128

約数和(自身を含む): 57784320

約数和(自身を除く): 36926310

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 23, 30, 37, 38, 43, 46, 57, 69, 74, 86, 95, 111, 114, 115, 129, 138, 185, 190, 215, 222, 230, 258, 285, 345, 370, 430, 437, 555, 570, 645, 690, 703, 817, 851, 874, 989, 1110, 1290, 1311, 1406, 1591, 1634, 1702, 1978, 2109, 2185, 2451, 2553, 2622, 2967, 3182, 3515, 4085, 4218, 4255, 4370, 4773, 4902, 4945, 5106, 5934, 6555, 7030, 7955, 8170, 8510, 9546, 9890, 10545, 12255, 12765, 13110, 14835, 15910, 16169, 18791, 21090, 23865, 24510, 25530, 29670, 30229, 32338, 36593, 37582, 47730, 48507, 56373, 60458, 73186, 80845, 90687, 93955, 97014, 109779, 112746, 151145, 161690, 181374, 182965, 187910, 219558, 242535, 281865, 302290, 365930, 453435, 485070, 548895, 563730, 695267, 906870, 1097790, 1390534, 2085801, 3476335, 4171602, 6952670, 10429005, 20858010]

約数ペア:

[(1, 20858010), (2, 10429005), (3, 6952670), (5, 4171602), (6, 3476335), (10, 2085801), (15, 1390534), (19, 1097790), (23, 906870), (30, 695267), (37, 563730), (38, 548895), (43, 485070), (46, 453435), (57, 365930), (69, 302290), (74, 281865), (86, 242535), (95, 219558), (111, 187910), (114, 182965), (115, 181374), (129, 161690), (138, 151145), (185, 112746), (190, 109779), (215, 97014), (222, 93955), (230, 90687), (258, 80845), (285, 73186), (345, 60458), (370, 56373), (430, 48507), (437, 47730), (555, 37582), (570, 36593), (645, 32338), (690, 30229), (703, 29670), (817, 25530), (851, 24510), (874, 23865), (989, 21090), (1110, 18791), (1290, 16169), (1311, 15910), (1406, 14835), (1591, 13110), (1634, 12765), (1702, 12255), (1978, 10545), (2109, 9890), (2185, 9546), (2451, 8510), (2553, 8170), (2622, 7955), (2967, 7030), (3182, 6555), (3515, 5934), (4085, 5106), (4218, 4945), (4255, 4902), (4370, 4773)]