28138240

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:142

約数の個数: 144

約数和(自身を含む): 77263200

約数和(自身を除く): 49124960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 89, 95, 104, 128, 130, 152, 160, 178, 190, 208, 247, 256, 260, 304, 320, 356, 380, 416, 445, 494, 520, 608, 640, 712, 760, 832, 890, 988, 1040, 1157, 1216, 1235, 1280, 1424, 1520, 1664, 1691, 1780, 1976, 2080, 2314, 2432, 2470, 2848, 3040, 3328, 3382, 3560, 3952, 4160, 4628, 4864, 4940, 5696, 5785, 6080, 6764, 7120, 7904, 8320, 8455, 9256, 9880, 11392, 11570, 12160, 13528, 14240, 15808, 16640, 16910, 18512, 19760, 21983, 22784, 23140, 24320, 27056, 28480, 31616, 33820, 37024, 39520, 43966, 46280, 54112, 56960, 63232, 67640, 74048, 79040, 87932, 92560, 108224, 109915, 113920, 135280, 148096, 158080, 175864, 185120, 216448, 219830, 270560, 296192, 316160, 351728, 370240, 432896, 439660, 541120, 703456, 740480, 879320, 1082240, 1406912, 1480960, 1758640, 2164480, 2813824, 3517280, 5627648, 7034560, 14069120, 28138240]

約数ペア:

[(1, 28138240), (2, 14069120), (4, 7034560), (5, 5627648), (8, 3517280), (10, 2813824), (13, 2164480), (16, 1758640), (19, 1480960), (20, 1406912), (26, 1082240), (32, 879320), (38, 740480), (40, 703456), (52, 541120), (64, 439660), (65, 432896), (76, 370240), (80, 351728), (89, 316160), (95, 296192), (104, 270560), (128, 219830), (130, 216448), (152, 185120), (160, 175864), (178, 158080), (190, 148096), (208, 135280), (247, 113920), (256, 109915), (260, 108224), (304, 92560), (320, 87932), (356, 79040), (380, 74048), (416, 67640), (445, 63232), (494, 56960), (520, 54112), (608, 46280), (640, 43966), (712, 39520), (760, 37024), (832, 33820), (890, 31616), (988, 28480), (1040, 27056), (1157, 24320), (1216, 23140), (1235, 22784), (1280, 21983), (1424, 19760), (1520, 18512), (1664, 16910), (1691, 16640), (1780, 15808), (1976, 14240), (2080, 13528), (2314, 12160), (2432, 11570), (2470, 11392), (2848, 9880), (3040, 9256), (3328, 8455), (3382, 8320), (3560, 7904), (3952, 7120), (4160, 6764), (4628, 6080), (4864, 5785), (4940, 5696)]