1899995440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{178571}}^1$

素因数の和:178610

約数の個数: 80

約数和(自身を含む): 5314302720

約数和(自身を除く): 3414307280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 2128, 2660, 5320, 10640, 178571, 357142, 714284, 892855, 1249997, 1428568, 1785710, 2499994, 2857136, 3392849, 3571420, 4999988, 6249985, 6785698, 7142840, 9999976, 12499970, 13571396, 14285680, 16964245, 19999952, 23749943, 24999940, 27142792, 33928490, 47499886, 49999880, 54285584, 67856980, 94999772, 99999760, 118749715, 135713960, 189999544, 237499430, 271427920, 379999088, 474998860, 949997720, 1899995440]

約数ペア:

[(1, 1899995440), (2, 949997720), (4, 474998860), (5, 379999088), (7, 271427920), (8, 237499430), (10, 189999544), (14, 135713960), (16, 118749715), (19, 99999760), (20, 94999772), (28, 67856980), (35, 54285584), (38, 49999880), (40, 47499886), (56, 33928490), (70, 27142792), (76, 24999940), (80, 23749943), (95, 19999952), (112, 16964245), (133, 14285680), (140, 13571396), (152, 12499970), (190, 9999976), (266, 7142840), (280, 6785698), (304, 6249985), (380, 4999988), (532, 3571420), (560, 3392849), (665, 2857136), (760, 2499994), (1064, 1785710), (1330, 1428568), (1520, 1249997), (2128, 892855), (2660, 714284), (5320, 357142), (10640, 178571)]