19453720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:233

約数の個数: 128

約数和(自身を含む): 54432000

約数和(自身を除く): 34978280

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 19, 20, 22, 26, 38, 40, 44, 52, 55, 65, 76, 88, 95, 104, 110, 130, 143, 152, 179, 190, 209, 220, 247, 260, 286, 358, 380, 418, 440, 494, 520, 572, 715, 716, 760, 836, 895, 988, 1045, 1144, 1235, 1430, 1432, 1672, 1790, 1969, 1976, 2090, 2327, 2470, 2717, 2860, 3401, 3580, 3938, 4180, 4654, 4940, 5434, 5720, 6802, 7160, 7876, 8360, 9308, 9845, 9880, 10868, 11635, 13585, 13604, 15752, 17005, 18616, 19690, 21736, 23270, 25597, 27170, 27208, 34010, 37411, 39380, 44213, 46540, 51194, 54340, 68020, 74822, 78760, 88426, 93080, 102388, 108680, 127985, 136040, 149644, 176852, 187055, 204776, 221065, 255970, 299288, 353704, 374110, 442130, 486343, 511940, 748220, 884260, 972686, 1023880, 1496440, 1768520, 1945372, 2431715, 3890744, 4863430, 9726860, 19453720]

約数ペア:

[(1, 19453720), (2, 9726860), (4, 4863430), (5, 3890744), (8, 2431715), (10, 1945372), (11, 1768520), (13, 1496440), (19, 1023880), (20, 972686), (22, 884260), (26, 748220), (38, 511940), (40, 486343), (44, 442130), (52, 374110), (55, 353704), (65, 299288), (76, 255970), (88, 221065), (95, 204776), (104, 187055), (110, 176852), (130, 149644), (143, 136040), (152, 127985), (179, 108680), (190, 102388), (209, 93080), (220, 88426), (247, 78760), (260, 74822), (286, 68020), (358, 54340), (380, 51194), (418, 46540), (440, 44213), (494, 39380), (520, 37411), (572, 34010), (715, 27208), (716, 27170), (760, 25597), (836, 23270), (895, 21736), (988, 19690), (1045, 18616), (1144, 17005), (1235, 15752), (1430, 13604), (1432, 13585), (1672, 11635), (1790, 10868), (1969, 9880), (1976, 9845), (2090, 9308), (2327, 8360), (2470, 7876), (2717, 7160), (2860, 6802), (3401, 5720), (3580, 5434), (3938, 4940), (4180, 4654)]