20895270400

素因数分解:

$2^9\times 5^2\times {\mathrm{1249}}^1\times {\mathrm{1307}}^1$

素因数の和:2584

約数の個数: 120

約数和(自身を含む): 51850755000

約数和(自身を除く): 30955484600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1249, 1280, 1307, 1600, 2498, 2560, 2614, 3200, 4996, 5228, 6245, 6400, 6535, 9992, 10456, 12490, 12800, 13070, 19984, 20912, 24980, 26140, 31225, 32675, 39968, 41824, 49960, 52280, 62450, 65350, 79936, 83648, 99920, 104560, 124900, 130700, 159872, 167296, 199840, 209120, 249800, 261400, 319744, 334592, 399680, 418240, 499600, 522800, 639488, 669184, 799360, 836480, 999200, 1045600, 1598720, 1632443, 1672960, 1998400, 2091200, 3197440, 3264886, 3345920, 3996800, 4182400, 6529772, 7993600, 8162215, 8364800, 13059544, 15987200, 16324430, 16729600, 26119088, 32648860, 40811075, 52238176, 65297720, 81622150, 104476352, 130595440, 163244300, 208952704, 261190880, 326488600, 417905408, 522381760, 652977200, 835810816, 1044763520, 1305954400, 2089527040, 2611908800, 4179054080, 5223817600, 10447635200, 20895270400]

約数ペア:

[(1, 20895270400), (2, 10447635200), (4, 5223817600), (5, 4179054080), (8, 2611908800), (10, 2089527040), (16, 1305954400), (20, 1044763520), (25, 835810816), (32, 652977200), (40, 522381760), (50, 417905408), (64, 326488600), (80, 261190880), (100, 208952704), (128, 163244300), (160, 130595440), (200, 104476352), (256, 81622150), (320, 65297720), (400, 52238176), (512, 40811075), (640, 32648860), (800, 26119088), (1249, 16729600), (1280, 16324430), (1307, 15987200), (1600, 13059544), (2498, 8364800), (2560, 8162215), (2614, 7993600), (3200, 6529772), (4996, 4182400), (5228, 3996800), (6245, 3345920), (6400, 3264886), (6535, 3197440), (9992, 2091200), (10456, 1998400), (12490, 1672960), (12800, 1632443), (13070, 1598720), (19984, 1045600), (20912, 999200), (24980, 836480), (26140, 799360), (31225, 669184), (32675, 639488), (39968, 522800), (41824, 499600), (49960, 418240), (52280, 399680), (62450, 334592), (65350, 319744), (79936, 261400), (83648, 249800), (99920, 209120), (104560, 199840), (124900, 167296), (130700, 159872)]