19780650

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:520

約数の個数: 72

約数和(自身を含む): 53752140

約数和(自身を除く): 33971490

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 113, 150, 225, 226, 339, 389, 450, 565, 678, 778, 1017, 1130, 1167, 1695, 1945, 2034, 2334, 2825, 3390, 3501, 3890, 5085, 5650, 5835, 7002, 8475, 9725, 10170, 11670, 16950, 17505, 19450, 25425, 29175, 35010, 43957, 50850, 58350, 87525, 87914, 131871, 175050, 219785, 263742, 395613, 439570, 659355, 791226, 1098925, 1318710, 1978065, 2197850, 3296775, 3956130, 6593550, 9890325, 19780650]

約数ペア:

[(1, 19780650), (2, 9890325), (3, 6593550), (5, 3956130), (6, 3296775), (9, 2197850), (10, 1978065), (15, 1318710), (18, 1098925), (25, 791226), (30, 659355), (45, 439570), (50, 395613), (75, 263742), (90, 219785), (113, 175050), (150, 131871), (225, 87914), (226, 87525), (339, 58350), (389, 50850), (450, 43957), (565, 35010), (678, 29175), (778, 25425), (1017, 19450), (1130, 17505), (1167, 16950), (1695, 11670), (1945, 10170), (2034, 9725), (2334, 8475), (2825, 7002), (3390, 5835), (3501, 5650), (3890, 5085)]