18907520

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{953}}^1$

素因数の和:1003

約数の個数: 64

約数和(自身を含む): 46707840

約数和(自身を除く): 27800320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 953, 992, 1240, 1906, 1984, 2480, 3812, 3968, 4765, 4960, 7624, 9530, 9920, 15248, 19060, 19840, 29543, 30496, 38120, 59086, 60992, 76240, 118172, 121984, 147715, 152480, 236344, 295430, 304960, 472688, 590860, 609920, 945376, 1181720, 1890752, 2363440, 3781504, 4726880, 9453760, 18907520]

約数ペア:

[(1, 18907520), (2, 9453760), (4, 4726880), (5, 3781504), (8, 2363440), (10, 1890752), (16, 1181720), (20, 945376), (31, 609920), (32, 590860), (40, 472688), (62, 304960), (64, 295430), (80, 236344), (124, 152480), (128, 147715), (155, 121984), (160, 118172), (248, 76240), (310, 60992), (320, 59086), (496, 38120), (620, 30496), (640, 29543), (953, 19840), (992, 19060), (1240, 15248), (1906, 9920), (1984, 9530), (2480, 7624), (3812, 4960), (3968, 4765)]