21307290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1019}}^1$

素因数の和:1087

約数の個数: 64

約数和(自身を含む): 55520640

約数和(自身を除く): 34213350

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 41, 51, 82, 85, 102, 123, 170, 205, 246, 255, 410, 510, 615, 697, 1019, 1230, 1394, 2038, 2091, 3057, 3485, 4182, 5095, 6114, 6970, 10190, 10455, 15285, 17323, 20910, 30570, 34646, 41779, 51969, 83558, 86615, 103938, 125337, 173230, 208895, 250674, 259845, 417790, 519690, 626685, 710243, 1253370, 1420486, 2130729, 3551215, 4261458, 7102430, 10653645, 21307290]

約数ペア:

[(1, 21307290), (2, 10653645), (3, 7102430), (5, 4261458), (6, 3551215), (10, 2130729), (15, 1420486), (17, 1253370), (30, 710243), (34, 626685), (41, 519690), (51, 417790), (82, 259845), (85, 250674), (102, 208895), (123, 173230), (170, 125337), (205, 103938), (246, 86615), (255, 83558), (410, 51969), (510, 41779), (615, 34646), (697, 30570), (1019, 20910), (1230, 17323), (1394, 15285), (2038, 10455), (2091, 10190), (3057, 6970), (3485, 6114), (4182, 5095)]