1999996838380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{383}}^1\times {\mathrm{409}}^1\times {\mathrm{22013}}^1$

素因数の和:22843

約数の個数: 96

約数和(自身を含む): 4367014041600

約数和(自身を除く): 2367017203220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 383, 409, 580, 766, 818, 1532, 1636, 1915, 2045, 3830, 4090, 7660, 8180, 11107, 11861, 22013, 22214, 23722, 44026, 44428, 47444, 55535, 59305, 88052, 110065, 111070, 118610, 156647, 220130, 222140, 237220, 313294, 440260, 626588, 638377, 783235, 1276754, 1566470, 2553508, 3132940, 3191885, 4542763, 6383770, 8430979, 9003317, 9085526, 12767540, 16861958, 18006634, 18171052, 22713815, 33723916, 36013268, 42154895, 45016585, 45427630, 84309790, 90033170, 90855260, 168619580, 180066340, 244498391, 261096193, 488996782, 522192386, 977993564, 1044384772, 1222491955, 1305480965, 2444983910, 2610961930, 3448270411, 4889967820, 5221923860, 6896540822, 13793081644, 17241352055, 34482704110, 68965408220, 99999841919, 199999683838, 399999367676, 499999209595, 999998419190, 1999996838380]

約数ペア:

[(1, 1999996838380), (2, 999998419190), (4, 499999209595), (5, 399999367676), (10, 199999683838), (20, 99999841919), (29, 68965408220), (58, 34482704110), (116, 17241352055), (145, 13793081644), (290, 6896540822), (383, 5221923860), (409, 4889967820), (580, 3448270411), (766, 2610961930), (818, 2444983910), (1532, 1305480965), (1636, 1222491955), (1915, 1044384772), (2045, 977993564), (3830, 522192386), (4090, 488996782), (7660, 261096193), (8180, 244498391), (11107, 180066340), (11861, 168619580), (22013, 90855260), (22214, 90033170), (23722, 84309790), (44026, 45427630), (44428, 45016585), (47444, 42154895), (55535, 36013268), (59305, 33723916), (88052, 22713815), (110065, 18171052), (111070, 18006634), (118610, 16861958), (156647, 12767540), (220130, 9085526), (222140, 9003317), (237220, 8430979), (313294, 6383770), (440260, 4542763), (626588, 3191885), (638377, 3132940), (783235, 2553508), (1276754, 1566470)]