123739720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:215

約数の個数: 128

約数和(自身を含む): 314979840

約数和(自身を除く): 191240120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 61, 65, 83, 94, 104, 122, 130, 166, 188, 235, 244, 260, 305, 332, 376, 415, 470, 488, 520, 610, 611, 664, 793, 830, 940, 1079, 1220, 1222, 1586, 1660, 1880, 2158, 2440, 2444, 2867, 3055, 3172, 3320, 3901, 3965, 4316, 4888, 5063, 5395, 5734, 6110, 6344, 7802, 7930, 8632, 10126, 10790, 11468, 12220, 14335, 15604, 15860, 19505, 20252, 21580, 22936, 24440, 25315, 28670, 31208, 31720, 37271, 39010, 40504, 43160, 50630, 50713, 57340, 65819, 74542, 78020, 101260, 101426, 114680, 131638, 149084, 156040, 186355, 202520, 202852, 237961, 253565, 263276, 298168, 329095, 372710, 405704, 475922, 507130, 526552, 658190, 745420, 951844, 1014260, 1189805, 1316380, 1490840, 1903688, 2028520, 2379610, 2632760, 3093493, 4759220, 6186986, 9518440, 12373972, 15467465, 24747944, 30934930, 61869860, 123739720]

約数ペア:

[(1, 123739720), (2, 61869860), (4, 30934930), (5, 24747944), (8, 15467465), (10, 12373972), (13, 9518440), (20, 6186986), (26, 4759220), (40, 3093493), (47, 2632760), (52, 2379610), (61, 2028520), (65, 1903688), (83, 1490840), (94, 1316380), (104, 1189805), (122, 1014260), (130, 951844), (166, 745420), (188, 658190), (235, 526552), (244, 507130), (260, 475922), (305, 405704), (332, 372710), (376, 329095), (415, 298168), (470, 263276), (488, 253565), (520, 237961), (610, 202852), (611, 202520), (664, 186355), (793, 156040), (830, 149084), (940, 131638), (1079, 114680), (1220, 101426), (1222, 101260), (1586, 78020), (1660, 74542), (1880, 65819), (2158, 57340), (2440, 50713), (2444, 50630), (2867, 43160), (3055, 40504), (3172, 39010), (3320, 37271), (3901, 31720), (3965, 31208), (4316, 28670), (4888, 25315), (5063, 24440), (5395, 22936), (5734, 21580), (6110, 20252), (6344, 19505), (7802, 15860), (7930, 15604), (8632, 14335), (10126, 12220), (10790, 11468)]