138840320

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3499}}^1$

素因数の和:3551

約数の個数: 72

約数和(自身を含む): 343392000

約数和(自身を除く): 204551680

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, 620, 640, 992, 1240, 1280, 1984, 2480, 3499, 3968, 4960, 6998, 7936, 9920, 13996, 17495, 19840, 27992, 34990, 39680, 55984, 69980, 108469, 111968, 139960, 216938, 223936, 279920, 433876, 447872, 542345, 559840, 867752, 895744, 1084690, 1119680, 1735504, 2169380, 2239360, 3471008, 4338760, 4478720, 6942016, 8677520, 13884032, 17355040, 27768064, 34710080, 69420160, 138840320]

約数ペア:

[(1, 138840320), (2, 69420160), (4, 34710080), (5, 27768064), (8, 17355040), (10, 13884032), (16, 8677520), (20, 6942016), (31, 4478720), (32, 4338760), (40, 3471008), (62, 2239360), (64, 2169380), (80, 1735504), (124, 1119680), (128, 1084690), (155, 895744), (160, 867752), (248, 559840), (256, 542345), (310, 447872), (320, 433876), (496, 279920), (620, 223936), (640, 216938), (992, 139960), (1240, 111968), (1280, 108469), (1984, 69980), (2480, 55984), (3499, 39680), (3968, 34990), (4960, 27992), (6998, 19840), (7936, 17495), (9920, 13996)]