2450240

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:80

約数の個数: 112

約数和(自身を含む): 6827520

約数和(自身を除く): 4377280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 31, 32, 38, 40, 52, 62, 64, 65, 76, 80, 95, 104, 124, 130, 152, 155, 160, 190, 208, 247, 248, 260, 304, 310, 320, 380, 403, 416, 494, 496, 520, 589, 608, 620, 760, 806, 832, 988, 992, 1040, 1178, 1216, 1235, 1240, 1520, 1612, 1976, 1984, 2015, 2080, 2356, 2470, 2480, 2945, 3040, 3224, 3952, 4030, 4160, 4712, 4940, 4960, 5890, 6080, 6448, 7657, 7904, 8060, 9424, 9880, 9920, 11780, 12896, 15314, 15808, 16120, 18848, 19760, 23560, 25792, 30628, 32240, 37696, 38285, 39520, 47120, 61256, 64480, 76570, 79040, 94240, 122512, 128960, 153140, 188480, 245024, 306280, 490048, 612560, 1225120, 2450240]

約数ペア:

[(1, 2450240), (2, 1225120), (4, 612560), (5, 490048), (8, 306280), (10, 245024), (13, 188480), (16, 153140), (19, 128960), (20, 122512), (26, 94240), (31, 79040), (32, 76570), (38, 64480), (40, 61256), (52, 47120), (62, 39520), (64, 38285), (65, 37696), (76, 32240), (80, 30628), (95, 25792), (104, 23560), (124, 19760), (130, 18848), (152, 16120), (155, 15808), (160, 15314), (190, 12896), (208, 11780), (247, 9920), (248, 9880), (260, 9424), (304, 8060), (310, 7904), (320, 7657), (380, 6448), (403, 6080), (416, 5890), (494, 4960), (496, 4940), (520, 4712), (589, 4160), (608, 4030), (620, 3952), (760, 3224), (806, 3040), (832, 2945), (988, 2480), (992, 2470), (1040, 2356), (1178, 2080), (1216, 2015), (1235, 1984), (1240, 1976), (1520, 1612)]