312499840

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{829}}^1$

素因数の和:898

約数の個数: 128

約数和(自身を含む): 812736000

約数和(自身を除く): 500236160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 64, 76, 80, 95, 124, 128, 152, 155, 160, 190, 248, 304, 310, 320, 380, 496, 589, 608, 620, 640, 760, 829, 992, 1178, 1216, 1240, 1520, 1658, 1984, 2356, 2432, 2480, 2945, 3040, 3316, 3968, 4145, 4712, 4960, 5890, 6080, 6632, 8290, 9424, 9920, 11780, 12160, 13264, 15751, 16580, 18848, 19840, 23560, 25699, 26528, 31502, 33160, 37696, 47120, 51398, 53056, 63004, 66320, 75392, 78755, 94240, 102796, 106112, 126008, 128495, 132640, 157510, 188480, 205592, 252016, 256990, 265280, 315020, 376960, 411184, 488281, 504032, 513980, 530560, 630040, 822368, 976562, 1008064, 1027960, 1260080, 1644736, 1953124, 2016128, 2055920, 2441405, 2520160, 3289472, 3906248, 4111840, 4882810, 5040320, 7812496, 8223680, 9765620, 10080640, 15624992, 16447360, 19531240, 31249984, 39062480, 62499968, 78124960, 156249920, 312499840]

約数ペア:

[(1, 312499840), (2, 156249920), (4, 78124960), (5, 62499968), (8, 39062480), (10, 31249984), (16, 19531240), (19, 16447360), (20, 15624992), (31, 10080640), (32, 9765620), (38, 8223680), (40, 7812496), (62, 5040320), (64, 4882810), (76, 4111840), (80, 3906248), (95, 3289472), (124, 2520160), (128, 2441405), (152, 2055920), (155, 2016128), (160, 1953124), (190, 1644736), (248, 1260080), (304, 1027960), (310, 1008064), (320, 976562), (380, 822368), (496, 630040), (589, 530560), (608, 513980), (620, 504032), (640, 488281), (760, 411184), (829, 376960), (992, 315020), (1178, 265280), (1216, 256990), (1240, 252016), (1520, 205592), (1658, 188480), (1984, 157510), (2356, 132640), (2432, 128495), (2480, 126008), (2945, 106112), (3040, 102796), (3316, 94240), (3968, 78755), (4145, 75392), (4712, 66320), (4960, 63004), (5890, 53056), (6080, 51398), (6632, 47120), (8290, 37696), (9424, 33160), (9920, 31502), (11780, 26528), (12160, 25699), (13264, 23560), (15751, 19840), (16580, 18848)]