31239320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:169

約数の個数: 128

約数和(自身を含む): 85708800

約数和(自身を除く): 54469480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 59, 61, 62, 70, 118, 122, 124, 140, 155, 217, 236, 244, 248, 280, 295, 305, 310, 413, 427, 434, 472, 488, 590, 610, 620, 826, 854, 868, 1085, 1180, 1220, 1240, 1652, 1708, 1736, 1829, 1891, 2065, 2135, 2170, 2360, 2440, 3304, 3416, 3599, 3658, 3782, 4130, 4270, 4340, 7198, 7316, 7564, 8260, 8540, 8680, 9145, 9455, 12803, 13237, 14396, 14632, 15128, 16520, 17080, 17995, 18290, 18910, 25193, 25606, 26474, 28792, 35990, 36580, 37820, 50386, 51212, 52948, 64015, 66185, 71980, 73160, 75640, 100772, 102424, 105896, 111569, 125965, 128030, 132370, 143960, 201544, 223138, 251930, 256060, 264740, 446276, 503860, 512120, 529480, 557845, 780983, 892552, 1007720, 1115690, 1561966, 2231380, 3123932, 3904915, 4462760, 6247864, 7809830, 15619660, 31239320]

約数ペア:

[(1, 31239320), (2, 15619660), (4, 7809830), (5, 6247864), (7, 4462760), (8, 3904915), (10, 3123932), (14, 2231380), (20, 1561966), (28, 1115690), (31, 1007720), (35, 892552), (40, 780983), (56, 557845), (59, 529480), (61, 512120), (62, 503860), (70, 446276), (118, 264740), (122, 256060), (124, 251930), (140, 223138), (155, 201544), (217, 143960), (236, 132370), (244, 128030), (248, 125965), (280, 111569), (295, 105896), (305, 102424), (310, 100772), (413, 75640), (427, 73160), (434, 71980), (472, 66185), (488, 64015), (590, 52948), (610, 51212), (620, 50386), (826, 37820), (854, 36580), (868, 35990), (1085, 28792), (1180, 26474), (1220, 25606), (1240, 25193), (1652, 18910), (1708, 18290), (1736, 17995), (1829, 17080), (1891, 16520), (2065, 15128), (2135, 14632), (2170, 14396), (2360, 13237), (2440, 12803), (3304, 9455), (3416, 9145), (3599, 8680), (3658, 8540), (3782, 8260), (4130, 7564), (4270, 7316), (4340, 7198)]