21196552

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{631}}^1$

素因数の和:686

約数の個数: 64

約数和(自身を含む): 47779200

約数和(自身を除く): 26582648

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 442, 494, 631, 646, 884, 988, 1262, 1292, 1768, 1976, 2524, 2584, 4199, 5048, 8203, 8398, 10727, 11989, 16406, 16796, 21454, 23978, 32812, 33592, 42908, 47956, 65624, 85816, 95912, 139451, 155857, 203813, 278902, 311714, 407626, 557804, 623428, 815252, 1115608, 1246856, 1630504, 2649569, 5299138, 10598276, 21196552]

約数ペア:

[(1, 21196552), (2, 10598276), (4, 5299138), (8, 2649569), (13, 1630504), (17, 1246856), (19, 1115608), (26, 815252), (34, 623428), (38, 557804), (52, 407626), (68, 311714), (76, 278902), (104, 203813), (136, 155857), (152, 139451), (221, 95912), (247, 85816), (323, 65624), (442, 47956), (494, 42908), (631, 33592), (646, 32812), (884, 23978), (988, 21454), (1262, 16796), (1292, 16406), (1768, 11989), (1976, 10727), (2524, 8398), (2584, 8203), (4199, 5048)]