21455190

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:446

約数の個数: 96

約数和(自身を含む): 60821280

約数和(自身を除く): 39366090

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 37, 45, 51, 74, 85, 90, 102, 111, 153, 170, 185, 222, 255, 306, 333, 370, 379, 510, 555, 629, 666, 758, 765, 1110, 1137, 1258, 1530, 1665, 1887, 1895, 2274, 3145, 3330, 3411, 3774, 3790, 5661, 5685, 6290, 6443, 6822, 9435, 11322, 11370, 12886, 14023, 17055, 18870, 19329, 28046, 28305, 32215, 34110, 38658, 42069, 56610, 57987, 64430, 70115, 84138, 96645, 115974, 126207, 140230, 193290, 210345, 238391, 252414, 289935, 420690, 476782, 579870, 631035, 715173, 1191955, 1262070, 1430346, 2145519, 2383910, 3575865, 4291038, 7151730, 10727595, 21455190]

約数ペア:

[(1, 21455190), (2, 10727595), (3, 7151730), (5, 4291038), (6, 3575865), (9, 2383910), (10, 2145519), (15, 1430346), (17, 1262070), (18, 1191955), (30, 715173), (34, 631035), (37, 579870), (45, 476782), (51, 420690), (74, 289935), (85, 252414), (90, 238391), (102, 210345), (111, 193290), (153, 140230), (170, 126207), (185, 115974), (222, 96645), (255, 84138), (306, 70115), (333, 64430), (370, 57987), (379, 56610), (510, 42069), (555, 38658), (629, 34110), (666, 32215), (758, 28305), (765, 28046), (1110, 19329), (1137, 18870), (1258, 17055), (1530, 14023), (1665, 12886), (1887, 11370), (1895, 11322), (2274, 9435), (3145, 6822), (3330, 6443), (3411, 6290), (3774, 5685), (3790, 5661)]