1638894720

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{503}}^1\times {\mathrm{1697}}^1$

素因数の和:2222

約数の個数: 128

約数和(自身を含む): 5237447040

約数和(自身を除く): 3598552320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 503, 640, 960, 1006, 1509, 1697, 1920, 2012, 2515, 3018, 3394, 4024, 5030, 5091, 6036, 6788, 7545, 8048, 8485, 10060, 10182, 12072, 13576, 15090, 16096, 16970, 20120, 20364, 24144, 25455, 27152, 30180, 32192, 33940, 40240, 40728, 48288, 50910, 54304, 60360, 64384, 67880, 80480, 81456, 96576, 101820, 108608, 120720, 135760, 160960, 162912, 193152, 203640, 217216, 241440, 271520, 321920, 325824, 407280, 482880, 543040, 651648, 814560, 853591, 965760, 1086080, 1629120, 1707182, 2560773, 3258240, 3414364, 4267955, 5121546, 6828728, 8535910, 10243092, 12803865, 13657456, 17071820, 20486184, 25607730, 27314912, 34143640, 40972368, 51215460, 54629824, 68287280, 81944736, 102430920, 109259648, 136574560, 163889472, 204861840, 273149120, 327778944, 409723680, 546298240, 819447360, 1638894720]

約数ペア:

[(1, 1638894720), (2, 819447360), (3, 546298240), (4, 409723680), (5, 327778944), (6, 273149120), (8, 204861840), (10, 163889472), (12, 136574560), (15, 109259648), (16, 102430920), (20, 81944736), (24, 68287280), (30, 54629824), (32, 51215460), (40, 40972368), (48, 34143640), (60, 27314912), (64, 25607730), (80, 20486184), (96, 17071820), (120, 13657456), (128, 12803865), (160, 10243092), (192, 8535910), (240, 6828728), (320, 5121546), (384, 4267955), (480, 3414364), (503, 3258240), (640, 2560773), (960, 1707182), (1006, 1629120), (1509, 1086080), (1697, 965760), (1920, 853591), (2012, 814560), (2515, 651648), (3018, 543040), (3394, 482880), (4024, 407280), (5030, 325824), (5091, 321920), (6036, 271520), (6788, 241440), (7545, 217216), (8048, 203640), (8485, 193152), (10060, 162912), (10182, 160960), (12072, 135760), (13576, 120720), (15090, 108608), (16096, 101820), (16970, 96576), (20120, 81456), (20364, 80480), (24144, 67880), (25455, 64384), (27152, 60360), (30180, 54304), (32192, 50910), (33940, 48288), (40240, 40728)]