20512488015

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{460903}}^1$

素因数の和:460980

約数の個数: 48

約数和(自身を含む): 37963740672

約数和(自身を除く): 17451252657

約数列:

[1, 3, 5, 9, 15, 23, 43, 45, 69, 115, 129, 207, 215, 345, 387, 645, 989, 1035, 1935, 2967, 4945, 8901, 14835, 44505, 460903, 1382709, 2304515, 4148127, 6913545, 10600769, 19818829, 20740635, 31802307, 53003845, 59456487, 95406921, 99094145, 159011535, 178369461, 297282435, 455833067, 477034605, 891847305, 1367499201, 2279165335, 4102497603, 6837496005, 20512488015]

約数ペア:

[(1, 20512488015), (3, 6837496005), (5, 4102497603), (9, 2279165335), (15, 1367499201), (23, 891847305), (43, 477034605), (45, 455833067), (69, 297282435), (115, 178369461), (129, 159011535), (207, 99094145), (215, 95406921), (345, 59456487), (387, 53003845), (645, 31802307), (989, 20740635), (1035, 19818829), (1935, 10600769), (2967, 6913545), (4945, 4148127), (8901, 2304515), (14835, 1382709), (44505, 460903)]