21686730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3271}}^1$

素因数の和:3311

約数の個数: 64

約数和(自身を含む): 59367168

約数和(自身を除く): 37680438

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, 3271, 3315, 6542, 6630, 9813, 16355, 19626, 32710, 42523, 49065, 55607, 85046, 98130, 111214, 127569, 166821, 212615, 255138, 278035, 333642, 425230, 556070, 637845, 722891, 834105, 1275690, 1445782, 1668210, 2168673, 3614455, 4337346, 7228910, 10843365, 21686730]

約数ペア:

[(1, 21686730), (2, 10843365), (3, 7228910), (5, 4337346), (6, 3614455), (10, 2168673), (13, 1668210), (15, 1445782), (17, 1275690), (26, 834105), (30, 722891), (34, 637845), (39, 556070), (51, 425230), (65, 333642), (78, 278035), (85, 255138), (102, 212615), (130, 166821), (170, 127569), (195, 111214), (221, 98130), (255, 85046), (390, 55607), (442, 49065), (510, 42523), (663, 32710), (1105, 19626), (1326, 16355), (2210, 9813), (3271, 6630), (3315, 6542)]