78915320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{97}}^1$

素因数の和:205

約数の個数: 96

約数和(自身を含む): 200355120

約数和(自身を除く): 121439800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 97, 110, 172, 194, 215, 220, 344, 388, 430, 440, 473, 485, 776, 860, 946, 970, 1067, 1720, 1849, 1892, 1940, 2134, 2365, 3698, 3784, 3880, 4171, 4268, 4730, 5335, 7396, 8342, 8536, 9245, 9460, 10670, 14792, 16684, 18490, 18920, 20339, 20855, 21340, 33368, 36980, 40678, 41710, 42680, 45881, 73960, 81356, 83420, 91762, 101695, 162712, 166840, 179353, 183524, 203390, 229405, 358706, 367048, 406780, 458810, 717412, 813560, 896765, 917620, 1434824, 1793530, 1835240, 1972883, 3587060, 3945766, 7174120, 7891532, 9864415, 15783064, 19728830, 39457660, 78915320]

約数ペア:

[(1, 78915320), (2, 39457660), (4, 19728830), (5, 15783064), (8, 9864415), (10, 7891532), (11, 7174120), (20, 3945766), (22, 3587060), (40, 1972883), (43, 1835240), (44, 1793530), (55, 1434824), (86, 917620), (88, 896765), (97, 813560), (110, 717412), (172, 458810), (194, 406780), (215, 367048), (220, 358706), (344, 229405), (388, 203390), (430, 183524), (440, 179353), (473, 166840), (485, 162712), (776, 101695), (860, 91762), (946, 83420), (970, 81356), (1067, 73960), (1720, 45881), (1849, 42680), (1892, 41710), (1940, 40678), (2134, 36980), (2365, 33368), (3698, 21340), (3784, 20855), (3880, 20339), (4171, 18920), (4268, 18490), (4730, 16684), (5335, 14792), (7396, 10670), (8342, 9460), (8536, 9245)]