21235890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3203}}^1$

素因数の和:3243

約数の個数: 64

約数和(自身を含む): 58133376

約数和(自身を除く): 36897486

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 26, 30, 34, 39, 51, 65, 78, 85, 102, 130, 170, 195, 221, 255, 390, 442, 510, 663, 1105, 1326, 2210, 3203, 3315, 6406, 6630, 9609, 16015, 19218, 32030, 41639, 48045, 54451, 83278, 96090, 108902, 124917, 163353, 208195, 249834, 272255, 326706, 416390, 544510, 624585, 707863, 816765, 1249170, 1415726, 1633530, 2123589, 3539315, 4247178, 7078630, 10617945, 21235890]

約数ペア:

[(1, 21235890), (2, 10617945), (3, 7078630), (5, 4247178), (6, 3539315), (10, 2123589), (13, 1633530), (15, 1415726), (17, 1249170), (26, 816765), (30, 707863), (34, 624585), (39, 544510), (51, 416390), (65, 326706), (78, 272255), (85, 249834), (102, 208195), (130, 163353), (170, 124917), (195, 108902), (221, 96090), (255, 83278), (390, 54451), (442, 48045), (510, 41639), (663, 32030), (1105, 19218), (1326, 16015), (2210, 9609), (3203, 6630), (3315, 6406)]