20016700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{587}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 48996864

約数和(自身を除く): 28980164

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 31, 44, 50, 55, 62, 100, 110, 124, 155, 220, 275, 310, 341, 550, 587, 620, 682, 775, 1100, 1174, 1364, 1550, 1705, 2348, 2935, 3100, 3410, 5870, 6457, 6820, 8525, 11740, 12914, 14675, 17050, 18197, 25828, 29350, 32285, 34100, 36394, 58700, 64570, 72788, 90985, 129140, 161425, 181970, 200167, 322850, 363940, 400334, 454925, 645700, 800668, 909850, 1000835, 1819700, 2001670, 4003340, 5004175, 10008350, 20016700]

約数ペア:

[(1, 20016700), (2, 10008350), (4, 5004175), (5, 4003340), (10, 2001670), (11, 1819700), (20, 1000835), (22, 909850), (25, 800668), (31, 645700), (44, 454925), (50, 400334), (55, 363940), (62, 322850), (100, 200167), (110, 181970), (124, 161425), (155, 129140), (220, 90985), (275, 72788), (310, 64570), (341, 58700), (550, 36394), (587, 34100), (620, 32285), (682, 29350), (775, 25828), (1100, 18197), (1174, 17050), (1364, 14675), (1550, 12914), (1705, 11740), (2348, 8525), (2935, 6820), (3100, 6457), (3410, 5870)]