18598450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:140

約数の個数: 72

約数和(自身を含む): 39211776

約数和(自身を除く): 20613326

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 71, 130, 142, 155, 169, 310, 325, 338, 355, 403, 650, 710, 775, 806, 845, 923, 1550, 1690, 1775, 1846, 2015, 2201, 3550, 4030, 4225, 4402, 4615, 5239, 8450, 9230, 10075, 10478, 11005, 11999, 20150, 22010, 23075, 23998, 26195, 28613, 46150, 52390, 55025, 57226, 59995, 110050, 119990, 130975, 143065, 261950, 286130, 299975, 371969, 599950, 715325, 743938, 1430650, 1859845, 3719690, 9299225, 18598450]

約数ペア:

[(1, 18598450), (2, 9299225), (5, 3719690), (10, 1859845), (13, 1430650), (25, 743938), (26, 715325), (31, 599950), (50, 371969), (62, 299975), (65, 286130), (71, 261950), (130, 143065), (142, 130975), (155, 119990), (169, 110050), (310, 59995), (325, 57226), (338, 55025), (355, 52390), (403, 46150), (650, 28613), (710, 26195), (775, 23998), (806, 23075), (845, 22010), (923, 20150), (1550, 11999), (1690, 11005), (1775, 10478), (1846, 10075), (2015, 9230), (2201, 8450), (3550, 5239), (4030, 4615), (4225, 4402)]