818788360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{311}}^1$

素因数の和:479

約数の個数: 128

約数和(自身を含む): 2047368960

約数和(自身を除く): 1228580600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 83, 104, 122, 130, 166, 244, 260, 305, 311, 332, 415, 488, 520, 610, 622, 664, 793, 830, 1079, 1220, 1244, 1555, 1586, 1660, 2158, 2440, 2488, 3110, 3172, 3320, 3965, 4043, 4316, 5063, 5395, 6220, 6344, 7930, 8086, 8632, 10126, 10790, 12440, 15860, 16172, 18971, 20215, 20252, 21580, 25315, 25813, 31720, 32344, 37942, 40430, 40504, 43160, 50630, 51626, 65819, 75884, 80860, 94855, 101260, 103252, 129065, 131638, 151768, 161720, 189710, 202520, 206504, 246623, 258130, 263276, 329095, 335569, 379420, 493246, 516260, 526552, 658190, 671138, 758840, 986492, 1032520, 1233115, 1316380, 1342276, 1574593, 1677845, 1972984, 2466230, 2632760, 2684552, 3149186, 3355690, 4932460, 6298372, 6711380, 7872965, 9864920, 12596744, 13422760, 15745930, 20469709, 31491860, 40939418, 62983720, 81878836, 102348545, 163757672, 204697090, 409394180, 818788360]

約数ペア:

[(1, 818788360), (2, 409394180), (4, 204697090), (5, 163757672), (8, 102348545), (10, 81878836), (13, 62983720), (20, 40939418), (26, 31491860), (40, 20469709), (52, 15745930), (61, 13422760), (65, 12596744), (83, 9864920), (104, 7872965), (122, 6711380), (130, 6298372), (166, 4932460), (244, 3355690), (260, 3149186), (305, 2684552), (311, 2632760), (332, 2466230), (415, 1972984), (488, 1677845), (520, 1574593), (610, 1342276), (622, 1316380), (664, 1233115), (793, 1032520), (830, 986492), (1079, 758840), (1220, 671138), (1244, 658190), (1555, 526552), (1586, 516260), (1660, 493246), (2158, 379420), (2440, 335569), (2488, 329095), (3110, 263276), (3172, 258130), (3320, 246623), (3965, 206504), (4043, 202520), (4316, 189710), (5063, 161720), (5395, 151768), (6220, 131638), (6344, 129065), (7930, 103252), (8086, 101260), (8632, 94855), (10126, 80860), (10790, 75884), (12440, 65819), (15860, 51626), (16172, 50630), (18971, 43160), (20215, 40504), (20252, 40430), (21580, 37942), (25315, 32344), (25813, 31720)]