18796180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 43902432

約数和(自身を除く): 25106252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 83, 130, 134, 166, 169, 260, 268, 332, 335, 338, 415, 670, 676, 830, 845, 871, 1079, 1340, 1660, 1690, 1742, 2158, 3380, 3484, 4316, 4355, 5395, 5561, 8710, 10790, 11122, 11323, 14027, 17420, 21580, 22244, 22646, 27805, 28054, 45292, 55610, 56108, 56615, 70135, 72293, 111220, 113230, 140270, 144586, 226460, 280540, 289172, 361465, 722930, 939809, 1445860, 1879618, 3759236, 4699045, 9398090, 18796180]

約数ペア:

[(1, 18796180), (2, 9398090), (4, 4699045), (5, 3759236), (10, 1879618), (13, 1445860), (20, 939809), (26, 722930), (52, 361465), (65, 289172), (67, 280540), (83, 226460), (130, 144586), (134, 140270), (166, 113230), (169, 111220), (260, 72293), (268, 70135), (332, 56615), (335, 56108), (338, 55610), (415, 45292), (670, 28054), (676, 27805), (830, 22646), (845, 22244), (871, 21580), (1079, 17420), (1340, 14027), (1660, 11323), (1690, 11122), (1742, 10790), (2158, 8710), (3380, 5561), (3484, 5395), (4316, 4355)]