221493760

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2791}}^1$

素因数の和:2845

約数の個数: 80

約数和(自身を含む): 548393472

約数和(自身を除く): 326899712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 2791, 3968, 4960, 5582, 7936, 9920, 11164, 13955, 15872, 19840, 22328, 27910, 39680, 44656, 55820, 79360, 86521, 89312, 111640, 173042, 178624, 223280, 346084, 357248, 432605, 446560, 692168, 714496, 865210, 893120, 1384336, 1428992, 1730420, 1786240, 2768672, 3460840, 3572480, 5537344, 6921680, 7144960, 11074688, 13843360, 22149376, 27686720, 44298752, 55373440, 110746880, 221493760]

約数ペア:

[(1, 221493760), (2, 110746880), (4, 55373440), (5, 44298752), (8, 27686720), (10, 22149376), (16, 13843360), (20, 11074688), (31, 7144960), (32, 6921680), (40, 5537344), (62, 3572480), (64, 3460840), (80, 2768672), (124, 1786240), (128, 1730420), (155, 1428992), (160, 1384336), (248, 893120), (256, 865210), (310, 714496), (320, 692168), (496, 446560), (512, 432605), (620, 357248), (640, 346084), (992, 223280), (1240, 178624), (1280, 173042), (1984, 111640), (2480, 89312), (2560, 86521), (2791, 79360), (3968, 55820), (4960, 44656), (5582, 39680), (7936, 27910), (9920, 22328), (11164, 19840), (13955, 15872)]