19705020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 58544640

約数和(自身を除く): 38839620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 109, 115, 131, 138, 218, 230, 262, 276, 327, 345, 393, 436, 460, 524, 545, 654, 655, 690, 786, 1090, 1308, 1310, 1380, 1572, 1635, 1965, 2180, 2507, 2620, 3013, 3270, 3930, 5014, 6026, 6540, 7521, 7860, 9039, 10028, 12052, 12535, 14279, 15042, 15065, 18078, 25070, 28558, 30084, 30130, 36156, 37605, 42837, 45195, 50140, 57116, 60260, 71395, 75210, 85674, 90390, 142790, 150420, 171348, 180780, 214185, 285580, 328417, 428370, 656834, 856740, 985251, 1313668, 1642085, 1970502, 3284170, 3941004, 4926255, 6568340, 9852510, 19705020]

約数ペア:

[(1, 19705020), (2, 9852510), (3, 6568340), (4, 4926255), (5, 3941004), (6, 3284170), (10, 1970502), (12, 1642085), (15, 1313668), (20, 985251), (23, 856740), (30, 656834), (46, 428370), (60, 328417), (69, 285580), (92, 214185), (109, 180780), (115, 171348), (131, 150420), (138, 142790), (218, 90390), (230, 85674), (262, 75210), (276, 71395), (327, 60260), (345, 57116), (393, 50140), (436, 45195), (460, 42837), (524, 37605), (545, 36156), (654, 30130), (655, 30084), (690, 28558), (786, 25070), (1090, 18078), (1308, 15065), (1310, 15042), (1380, 14279), (1572, 12535), (1635, 12052), (1965, 10028), (2180, 9039), (2507, 7860), (2620, 7521), (3013, 6540), (3270, 6026), (3930, 5014)]