204991220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{317}}^1$

素因数の和:513

約数の個数: 96

約数和(自身を含む): 512870400

約数和(自身を除く): 307879180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 149, 155, 217, 298, 310, 317, 434, 596, 620, 634, 745, 868, 1043, 1085, 1268, 1490, 1585, 2086, 2170, 2219, 2980, 3170, 4172, 4340, 4438, 4619, 5215, 6340, 8876, 9238, 9827, 10430, 11095, 18476, 19654, 20860, 22190, 23095, 32333, 39308, 44380, 46190, 47233, 49135, 64666, 68789, 92380, 94466, 98270, 129332, 137578, 161665, 188932, 196540, 236165, 275156, 323330, 330631, 343945, 472330, 646660, 661262, 687890, 944660, 1322524, 1375780, 1464223, 1653155, 2928446, 3306310, 5856892, 6612620, 7321115, 10249561, 14642230, 20499122, 29284460, 40998244, 51247805, 102495610, 204991220]

約数ペア:

[(1, 204991220), (2, 102495610), (4, 51247805), (5, 40998244), (7, 29284460), (10, 20499122), (14, 14642230), (20, 10249561), (28, 7321115), (31, 6612620), (35, 5856892), (62, 3306310), (70, 2928446), (124, 1653155), (140, 1464223), (149, 1375780), (155, 1322524), (217, 944660), (298, 687890), (310, 661262), (317, 646660), (434, 472330), (596, 343945), (620, 330631), (634, 323330), (745, 275156), (868, 236165), (1043, 196540), (1085, 188932), (1268, 161665), (1490, 137578), (1585, 129332), (2086, 98270), (2170, 94466), (2219, 92380), (2980, 68789), (3170, 64666), (4172, 49135), (4340, 47233), (4438, 46190), (4619, 44380), (5215, 39308), (6340, 32333), (8876, 23095), (9238, 22190), (9827, 20860), (10430, 19654), (11095, 18476)]