20161971890

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{223}}^1$

素因数の和:492

約数の個数: 128

約数和(自身を含む): 39713587200

約数和(自身を除く): 19551615310

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 89, 113, 145, 155, 178, 223, 226, 290, 310, 445, 446, 565, 890, 899, 1115, 1130, 1798, 2230, 2581, 2759, 3277, 3503, 4495, 5162, 5518, 6467, 6554, 6913, 7006, 8990, 10057, 12905, 12934, 13795, 13826, 16385, 17515, 19847, 20114, 25199, 25810, 27590, 32335, 32770, 34565, 35030, 39694, 50285, 50398, 64670, 69130, 80011, 99235, 100570, 101587, 125995, 160022, 198470, 200477, 203174, 251990, 291653, 311767, 400055, 400954, 507935, 575563, 583306, 615257, 623534, 730771, 781169, 800110, 1002385, 1015870, 1151126, 1230514, 1458265, 1461542, 1558835, 1562338, 2004770, 2242711, 2877815, 2916530, 3076285, 3117670, 3653855, 3905845, 4485422, 5755630, 6152570, 7307710, 7811690, 9041243, 11213555, 17842453, 18082486, 22427110, 22653901, 35684906, 45206215, 45307802, 65038619, 69524041, 89212265, 90412430, 113269505, 130077238, 139048082, 178424530, 226539010, 325193095, 347620205, 650386190, 695240410, 2016197189, 4032394378, 10080985945, 20161971890]

約数ペア:

[(1, 20161971890), (2, 10080985945), (5, 4032394378), (10, 2016197189), (29, 695240410), (31, 650386190), (58, 347620205), (62, 325193095), (89, 226539010), (113, 178424530), (145, 139048082), (155, 130077238), (178, 113269505), (223, 90412430), (226, 89212265), (290, 69524041), (310, 65038619), (445, 45307802), (446, 45206215), (565, 35684906), (890, 22653901), (899, 22427110), (1115, 18082486), (1130, 17842453), (1798, 11213555), (2230, 9041243), (2581, 7811690), (2759, 7307710), (3277, 6152570), (3503, 5755630), (4495, 4485422), (5162, 3905845), (5518, 3653855), (6467, 3117670), (6554, 3076285), (6913, 2916530), (7006, 2877815), (8990, 2242711), (10057, 2004770), (12905, 1562338), (12934, 1558835), (13795, 1461542), (13826, 1458265), (16385, 1230514), (17515, 1151126), (19847, 1015870), (20114, 1002385), (25199, 800110), (25810, 781169), (27590, 730771), (32335, 623534), (32770, 615257), (34565, 583306), (35030, 575563), (39694, 507935), (50285, 400954), (50398, 400055), (64670, 311767), (69130, 291653), (80011, 251990), (99235, 203174), (100570, 200477), (101587, 198470), (125995, 160022)]