639842480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{367}}^1$

素因数の和:467

約数の個数: 160

約数和(自身を含む): 1664655360

約数和(自身を除く): 1024812880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 37, 38, 40, 62, 74, 76, 80, 95, 124, 148, 152, 155, 185, 190, 248, 296, 304, 310, 367, 370, 380, 496, 589, 592, 620, 703, 734, 740, 760, 1147, 1178, 1240, 1406, 1468, 1480, 1520, 1835, 2294, 2356, 2480, 2812, 2936, 2945, 2960, 3515, 3670, 4588, 4712, 5624, 5735, 5872, 5890, 6973, 7030, 7340, 9176, 9424, 11248, 11377, 11470, 11780, 13579, 13946, 14060, 14680, 18352, 21793, 22754, 22940, 23560, 27158, 27892, 28120, 29360, 34865, 43586, 45508, 45880, 47120, 54316, 55784, 56240, 56885, 67895, 69730, 87172, 91016, 91760, 108632, 108965, 111568, 113770, 135790, 139460, 174344, 182032, 216163, 217264, 217930, 227540, 258001, 271580, 278920, 348688, 420949, 432326, 435860, 455080, 516002, 543160, 557840, 841898, 864652, 871720, 910160, 1032004, 1080815, 1086320, 1290005, 1683796, 1729304, 1743440, 2064008, 2104745, 2161630, 2580010, 3367592, 3458608, 4128016, 4209490, 4323260, 5160020, 6735184, 7998031, 8418980, 8646520, 10320040, 15996062, 16837960, 17293040, 20640080, 31992124, 33675920, 39990155, 63984248, 79980310, 127968496, 159960620, 319921240, 639842480]

約数ペア:

[(1, 639842480), (2, 319921240), (4, 159960620), (5, 127968496), (8, 79980310), (10, 63984248), (16, 39990155), (19, 33675920), (20, 31992124), (31, 20640080), (37, 17293040), (38, 16837960), (40, 15996062), (62, 10320040), (74, 8646520), (76, 8418980), (80, 7998031), (95, 6735184), (124, 5160020), (148, 4323260), (152, 4209490), (155, 4128016), (185, 3458608), (190, 3367592), (248, 2580010), (296, 2161630), (304, 2104745), (310, 2064008), (367, 1743440), (370, 1729304), (380, 1683796), (496, 1290005), (589, 1086320), (592, 1080815), (620, 1032004), (703, 910160), (734, 871720), (740, 864652), (760, 841898), (1147, 557840), (1178, 543160), (1240, 516002), (1406, 455080), (1468, 435860), (1480, 432326), (1520, 420949), (1835, 348688), (2294, 278920), (2356, 271580), (2480, 258001), (2812, 227540), (2936, 217930), (2945, 217264), (2960, 216163), (3515, 182032), (3670, 174344), (4588, 139460), (4712, 135790), (5624, 113770), (5735, 111568), (5872, 108965), (5890, 108632), (6973, 91760), (7030, 91016), (7340, 87172), (9176, 69730), (9424, 67895), (11248, 56885), (11377, 56240), (11470, 55784), (11780, 54316), (13579, 47120), (13946, 45880), (14060, 45508), (14680, 43586), (18352, 34865), (21793, 29360), (22754, 28120), (22940, 27892), (23560, 27158)]