31409820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{433}}^1$

素因数の和:492

約数の個数: 144

約数和(自身を含む): 106159872

約数和(自身を除く): 74750052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 31, 36, 39, 45, 52, 60, 62, 65, 78, 90, 93, 117, 124, 130, 155, 156, 180, 186, 195, 234, 260, 279, 310, 372, 390, 403, 433, 465, 468, 558, 585, 620, 780, 806, 866, 930, 1116, 1170, 1209, 1299, 1395, 1612, 1732, 1860, 2015, 2165, 2340, 2418, 2598, 2790, 3627, 3897, 4030, 4330, 4836, 5196, 5580, 5629, 6045, 6495, 7254, 7794, 8060, 8660, 11258, 12090, 12990, 13423, 14508, 15588, 16887, 18135, 19485, 22516, 24180, 25980, 26846, 28145, 33774, 36270, 38970, 40269, 50661, 53692, 56290, 67115, 67548, 72540, 77940, 80538, 84435, 101322, 112580, 120807, 134230, 161076, 168870, 174499, 201345, 202644, 241614, 253305, 268460, 337740, 348998, 402690, 483228, 506610, 523497, 604035, 697996, 805380, 872495, 1013220, 1046994, 1208070, 1570491, 1744990, 2093988, 2416140, 2617485, 3140982, 3489980, 5234970, 6281964, 7852455, 10469940, 15704910, 31409820]

約数ペア:

[(1, 31409820), (2, 15704910), (3, 10469940), (4, 7852455), (5, 6281964), (6, 5234970), (9, 3489980), (10, 3140982), (12, 2617485), (13, 2416140), (15, 2093988), (18, 1744990), (20, 1570491), (26, 1208070), (30, 1046994), (31, 1013220), (36, 872495), (39, 805380), (45, 697996), (52, 604035), (60, 523497), (62, 506610), (65, 483228), (78, 402690), (90, 348998), (93, 337740), (117, 268460), (124, 253305), (130, 241614), (155, 202644), (156, 201345), (180, 174499), (186, 168870), (195, 161076), (234, 134230), (260, 120807), (279, 112580), (310, 101322), (372, 84435), (390, 80538), (403, 77940), (433, 72540), (465, 67548), (468, 67115), (558, 56290), (585, 53692), (620, 50661), (780, 40269), (806, 38970), (866, 36270), (930, 33774), (1116, 28145), (1170, 26846), (1209, 25980), (1299, 24180), (1395, 22516), (1612, 19485), (1732, 18135), (1860, 16887), (2015, 15588), (2165, 14508), (2340, 13423), (2418, 12990), (2598, 12090), (2790, 11258), (3627, 8660), (3897, 8060), (4030, 7794), (4330, 7254), (4836, 6495), (5196, 6045), (5580, 5629)]