20806993100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{9769}}^1$

素因数の和:9880

約数の個数: 108

約数和(自身を含む): 48465257400

約数和(自身を除く): 27658264300

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 59, 76, 95, 100, 118, 190, 236, 295, 361, 380, 475, 590, 722, 950, 1121, 1180, 1444, 1475, 1805, 1900, 2242, 2950, 3610, 4484, 5605, 5900, 7220, 9025, 9769, 11210, 18050, 19538, 21299, 22420, 28025, 36100, 39076, 42598, 48845, 56050, 85196, 97690, 106495, 112100, 185611, 195380, 212990, 244225, 371222, 425980, 488450, 532475, 576371, 742444, 928055, 976900, 1064950, 1152742, 1856110, 2129900, 2305484, 2881855, 3526609, 3712220, 4640275, 5763710, 7053218, 9280550, 10951049, 11527420, 14106436, 14409275, 17633045, 18561100, 21902098, 28818550, 35266090, 43804196, 54755245, 57637100, 70532180, 88165225, 109510490, 176330450, 208069931, 219020980, 273776225, 352660900, 416139862, 547552450, 832279724, 1040349655, 1095104900, 2080699310, 4161398620, 5201748275, 10403496550, 20806993100]

約数ペア:

[(1, 20806993100), (2, 10403496550), (4, 5201748275), (5, 4161398620), (10, 2080699310), (19, 1095104900), (20, 1040349655), (25, 832279724), (38, 547552450), (50, 416139862), (59, 352660900), (76, 273776225), (95, 219020980), (100, 208069931), (118, 176330450), (190, 109510490), (236, 88165225), (295, 70532180), (361, 57637100), (380, 54755245), (475, 43804196), (590, 35266090), (722, 28818550), (950, 21902098), (1121, 18561100), (1180, 17633045), (1444, 14409275), (1475, 14106436), (1805, 11527420), (1900, 10951049), (2242, 9280550), (2950, 7053218), (3610, 5763710), (4484, 4640275), (5605, 3712220), (5900, 3526609), (7220, 2881855), (9025, 2305484), (9769, 2129900), (11210, 1856110), (18050, 1152742), (19538, 1064950), (21299, 976900), (22420, 928055), (28025, 742444), (36100, 576371), (39076, 532475), (42598, 488450), (48845, 425980), (56050, 371222), (85196, 244225), (97690, 212990), (106495, 195380), (112100, 185611)]