20456083960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{442007}}^1$

素因数の和:442120

約数の個数: 64

約数和(自身を含む): 50123707200

約数和(自身を除く): 29667623240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 89, 104, 130, 178, 260, 356, 445, 520, 712, 890, 1157, 1780, 2314, 3560, 4628, 5785, 9256, 11570, 23140, 46280, 442007, 884014, 1768028, 2210035, 3536056, 4420070, 5746091, 8840140, 11492182, 17680280, 22984364, 28730455, 39338623, 45968728, 57460910, 78677246, 114921820, 157354492, 196693115, 229843640, 314708984, 393386230, 511402099, 786772460, 1022804198, 1573544920, 2045608396, 2557010495, 4091216792, 5114020990, 10228041980, 20456083960]

約数ペア:

[(1, 20456083960), (2, 10228041980), (4, 5114020990), (5, 4091216792), (8, 2557010495), (10, 2045608396), (13, 1573544920), (20, 1022804198), (26, 786772460), (40, 511402099), (52, 393386230), (65, 314708984), (89, 229843640), (104, 196693115), (130, 157354492), (178, 114921820), (260, 78677246), (356, 57460910), (445, 45968728), (520, 39338623), (712, 28730455), (890, 22984364), (1157, 17680280), (1780, 11492182), (2314, 8840140), (3560, 5746091), (4628, 4420070), (5785, 3536056), (9256, 2210035), (11570, 1768028), (23140, 884014), (46280, 442007)]