258803480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:325

約数の個数: 128

約数和(自身を含む): 656208000

約数和(自身を除く): 397404520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 61, 65, 82, 104, 122, 130, 164, 199, 205, 244, 260, 305, 328, 398, 410, 488, 520, 533, 610, 793, 796, 820, 995, 1066, 1220, 1586, 1592, 1640, 1990, 2132, 2440, 2501, 2587, 2665, 3172, 3965, 3980, 4264, 5002, 5174, 5330, 6344, 7930, 7960, 8159, 10004, 10348, 10660, 12139, 12505, 12935, 15860, 16318, 20008, 20696, 21320, 24278, 25010, 25870, 31720, 32513, 32636, 40795, 48556, 50020, 51740, 60695, 65026, 65272, 81590, 97112, 100040, 103480, 106067, 121390, 130052, 157807, 162565, 163180, 212134, 242780, 260104, 315614, 325130, 326360, 424268, 485560, 497699, 530335, 631228, 650260, 789035, 848536, 995398, 1060670, 1262456, 1300520, 1578070, 1990796, 2121340, 2488495, 3156140, 3981592, 4242680, 4976990, 6312280, 6470087, 9953980, 12940174, 19907960, 25880348, 32350435, 51760696, 64700870, 129401740, 258803480]

約数ペア:

[(1, 258803480), (2, 129401740), (4, 64700870), (5, 51760696), (8, 32350435), (10, 25880348), (13, 19907960), (20, 12940174), (26, 9953980), (40, 6470087), (41, 6312280), (52, 4976990), (61, 4242680), (65, 3981592), (82, 3156140), (104, 2488495), (122, 2121340), (130, 1990796), (164, 1578070), (199, 1300520), (205, 1262456), (244, 1060670), (260, 995398), (305, 848536), (328, 789035), (398, 650260), (410, 631228), (488, 530335), (520, 497699), (533, 485560), (610, 424268), (793, 326360), (796, 325130), (820, 315614), (995, 260104), (1066, 242780), (1220, 212134), (1586, 163180), (1592, 162565), (1640, 157807), (1990, 130052), (2132, 121390), (2440, 106067), (2501, 103480), (2587, 100040), (2665, 97112), (3172, 81590), (3965, 65272), (3980, 65026), (4264, 60695), (5002, 51740), (5174, 50020), (5330, 48556), (6344, 40795), (7930, 32636), (7960, 32513), (8159, 31720), (10004, 25870), (10348, 25010), (10660, 24278), (12139, 21320), (12505, 20696), (12935, 20008), (15860, 16318)]