20640925120

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1\times {\mathrm{7561}}^1$

素因数の和:8046

約数の個数: 112

約数和(自身を含む): 51860196000

約数和(自身を除く): 31219270880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 449, 608, 760, 898, 1216, 1520, 1796, 2245, 3040, 3592, 4490, 6080, 7184, 7561, 8531, 8980, 14368, 15122, 17062, 17960, 28736, 30244, 34124, 35920, 37805, 42655, 60488, 68248, 71840, 75610, 85310, 120976, 136496, 143659, 143680, 151220, 170620, 241952, 272992, 287318, 302440, 341240, 483904, 545984, 574636, 604880, 682480, 718295, 1149272, 1209760, 1364960, 1436590, 2298544, 2419520, 2729920, 2873180, 3394889, 4597088, 5746360, 6789778, 9194176, 11492720, 13579556, 16974445, 22985440, 27159112, 33948890, 45970880, 54318224, 64502891, 67897780, 108636448, 129005782, 135795560, 217272896, 258011564, 271591120, 322514455, 516023128, 543182240, 645028910, 1032046256, 1086364480, 1290057820, 2064092512, 2580115640, 4128185024, 5160231280, 10320462560, 20640925120]

約数ペア:

[(1, 20640925120), (2, 10320462560), (4, 5160231280), (5, 4128185024), (8, 2580115640), (10, 2064092512), (16, 1290057820), (19, 1086364480), (20, 1032046256), (32, 645028910), (38, 543182240), (40, 516023128), (64, 322514455), (76, 271591120), (80, 258011564), (95, 217272896), (152, 135795560), (160, 129005782), (190, 108636448), (304, 67897780), (320, 64502891), (380, 54318224), (449, 45970880), (608, 33948890), (760, 27159112), (898, 22985440), (1216, 16974445), (1520, 13579556), (1796, 11492720), (2245, 9194176), (3040, 6789778), (3592, 5746360), (4490, 4597088), (6080, 3394889), (7184, 2873180), (7561, 2729920), (8531, 2419520), (8980, 2298544), (14368, 1436590), (15122, 1364960), (17062, 1209760), (17960, 1149272), (28736, 718295), (30244, 682480), (34124, 604880), (35920, 574636), (37805, 545984), (42655, 483904), (60488, 341240), (68248, 302440), (71840, 287318), (75610, 272992), (85310, 241952), (120976, 170620), (136496, 151220), (143659, 143680)]