12851720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 34473600

約数和(自身を除く): 21621880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 79, 83, 98, 140, 158, 166, 196, 245, 280, 316, 332, 392, 395, 415, 490, 553, 581, 632, 664, 790, 830, 980, 1106, 1162, 1580, 1660, 1960, 2212, 2324, 2765, 2905, 3160, 3320, 3871, 4067, 4424, 4648, 5530, 5810, 6557, 7742, 8134, 11060, 11620, 13114, 15484, 16268, 19355, 20335, 22120, 23240, 26228, 30968, 32536, 32785, 38710, 40670, 45899, 52456, 65570, 77420, 81340, 91798, 131140, 154840, 162680, 183596, 229495, 262280, 321293, 367192, 458990, 642586, 917980, 1285172, 1606465, 1835960, 2570344, 3212930, 6425860, 12851720]

約数ペア:

[(1, 12851720), (2, 6425860), (4, 3212930), (5, 2570344), (7, 1835960), (8, 1606465), (10, 1285172), (14, 917980), (20, 642586), (28, 458990), (35, 367192), (40, 321293), (49, 262280), (56, 229495), (70, 183596), (79, 162680), (83, 154840), (98, 131140), (140, 91798), (158, 81340), (166, 77420), (196, 65570), (245, 52456), (280, 45899), (316, 40670), (332, 38710), (392, 32785), (395, 32536), (415, 30968), (490, 26228), (553, 23240), (581, 22120), (632, 20335), (664, 19355), (790, 16268), (830, 15484), (980, 13114), (1106, 11620), (1162, 11060), (1580, 8134), (1660, 7742), (1960, 6557), (2212, 5810), (2324, 5530), (2765, 4648), (2905, 4424), (3160, 4067), (3320, 3871)]