71393920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8581}}^1$

素因数の和:8613

約数の個数: 64

約数和(自身を含む): 183826440

約数和(自身を除く): 112432520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 8581, 17162, 34324, 42905, 68648, 85810, 111553, 137296, 171620, 223106, 274592, 343240, 446212, 549184, 557765, 686480, 892424, 1098368, 1115530, 1372960, 1784848, 2231060, 2745920, 3569696, 4462120, 5491840, 7139392, 8924240, 14278784, 17848480, 35696960, 71393920]

約数ペア:

[(1, 71393920), (2, 35696960), (4, 17848480), (5, 14278784), (8, 8924240), (10, 7139392), (13, 5491840), (16, 4462120), (20, 3569696), (26, 2745920), (32, 2231060), (40, 1784848), (52, 1372960), (64, 1115530), (65, 1098368), (80, 892424), (104, 686480), (128, 557765), (130, 549184), (160, 446212), (208, 343240), (260, 274592), (320, 223106), (416, 171620), (520, 137296), (640, 111553), (832, 85810), (1040, 68648), (1664, 42905), (2080, 34324), (4160, 17162), (8320, 8581)]