19886020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:413

約数の個数: 96

約数和(自身を含む): 53625600

約数和(自身を除く): 33739580

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 37, 44, 55, 70, 74, 77, 110, 140, 148, 154, 185, 220, 259, 308, 349, 370, 385, 407, 518, 698, 740, 770, 814, 1036, 1295, 1396, 1540, 1628, 1745, 2035, 2443, 2590, 2849, 3490, 3839, 4070, 4886, 5180, 5698, 6980, 7678, 8140, 9772, 11396, 12215, 12913, 14245, 15356, 19195, 24430, 25826, 26873, 28490, 38390, 48860, 51652, 53746, 56980, 64565, 76780, 90391, 107492, 129130, 134365, 142043, 180782, 258260, 268730, 284086, 361564, 451955, 537460, 568172, 710215, 903910, 994301, 1420430, 1807820, 1988602, 2840860, 3977204, 4971505, 9943010, 19886020]

約数ペア:

[(1, 19886020), (2, 9943010), (4, 4971505), (5, 3977204), (7, 2840860), (10, 1988602), (11, 1807820), (14, 1420430), (20, 994301), (22, 903910), (28, 710215), (35, 568172), (37, 537460), (44, 451955), (55, 361564), (70, 284086), (74, 268730), (77, 258260), (110, 180782), (140, 142043), (148, 134365), (154, 129130), (185, 107492), (220, 90391), (259, 76780), (308, 64565), (349, 56980), (370, 53746), (385, 51652), (407, 48860), (518, 38390), (698, 28490), (740, 26873), (770, 25826), (814, 24430), (1036, 19195), (1295, 15356), (1396, 14245), (1540, 12913), (1628, 12215), (1745, 11396), (2035, 9772), (2443, 8140), (2590, 7678), (2849, 6980), (3490, 5698), (3839, 5180), (4070, 4886)]