21517100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:687

約数の個数: 72

約数和(自身を含む): 52663296

約数和(自身を除く): 31146196

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, 620, 631, 682, 775, 1100, 1262, 1364, 1550, 1705, 2524, 3100, 3155, 3410, 6310, 6820, 6941, 8525, 12620, 13882, 15775, 17050, 19561, 27764, 31550, 34100, 34705, 39122, 63100, 69410, 78244, 97805, 138820, 173525, 195610, 215171, 347050, 391220, 430342, 489025, 694100, 860684, 978050, 1075855, 1956100, 2151710, 4303420, 5379275, 10758550, 21517100]

約数ペア:

[(1, 21517100), (2, 10758550), (4, 5379275), (5, 4303420), (10, 2151710), (11, 1956100), (20, 1075855), (22, 978050), (25, 860684), (31, 694100), (44, 489025), (50, 430342), (55, 391220), (62, 347050), (100, 215171), (110, 195610), (124, 173525), (155, 138820), (220, 97805), (275, 78244), (310, 69410), (341, 63100), (550, 39122), (620, 34705), (631, 34100), (682, 31550), (775, 27764), (1100, 19561), (1262, 17050), (1364, 15775), (1550, 13882), (1705, 12620), (2524, 8525), (3100, 6941), (3155, 6820), (3410, 6310)]