20822750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 43243200

約数和(自身を除く): 22420450

約数列:

[1, 2, 5, 10, 13, 25, 26, 43, 50, 65, 86, 125, 130, 149, 215, 250, 298, 325, 430, 559, 650, 745, 1075, 1118, 1490, 1625, 1937, 2150, 2795, 3250, 3725, 3874, 5375, 5590, 6407, 7450, 9685, 10750, 12814, 13975, 18625, 19370, 27950, 32035, 37250, 48425, 64070, 69875, 83291, 96850, 139750, 160175, 166582, 242125, 320350, 416455, 484250, 800875, 832910, 1601750, 2082275, 4164550, 10411375, 20822750]

約数ペア:

[(1, 20822750), (2, 10411375), (5, 4164550), (10, 2082275), (13, 1601750), (25, 832910), (26, 800875), (43, 484250), (50, 416455), (65, 320350), (86, 242125), (125, 166582), (130, 160175), (149, 139750), (215, 96850), (250, 83291), (298, 69875), (325, 64070), (430, 48425), (559, 37250), (650, 32035), (745, 27950), (1075, 19370), (1118, 18625), (1490, 13975), (1625, 12814), (1937, 10750), (2150, 9685), (2795, 7450), (3250, 6407), (3725, 5590), (3874, 5375)]