408591160

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:261

約数の個数: 128

約数和(自身を含む): 993484800

約数和(自身を除く): 584893640

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 79, 86, 97, 124, 155, 158, 172, 194, 215, 248, 310, 316, 344, 388, 395, 430, 485, 620, 632, 776, 790, 860, 970, 1240, 1333, 1580, 1720, 1940, 2449, 2666, 3007, 3160, 3397, 3880, 4171, 4898, 5332, 6014, 6665, 6794, 7663, 8342, 9796, 10664, 12028, 12245, 13330, 13588, 15035, 15326, 16684, 16985, 19592, 20855, 24056, 24490, 26660, 27176, 30070, 30652, 33368, 33970, 38315, 41710, 48980, 53320, 60140, 61304, 67940, 76630, 83420, 97960, 105307, 120280, 129301, 135880, 153260, 166840, 210614, 237553, 258602, 306520, 329509, 421228, 475106, 517204, 526535, 646505, 659018, 842456, 950212, 1034408, 1053070, 1187765, 1293010, 1318036, 1647545, 1900424, 2106140, 2375530, 2586020, 2636072, 3295090, 4212280, 4751060, 5172040, 6590180, 9502120, 10214779, 13180360, 20429558, 40859116, 51073895, 81718232, 102147790, 204295580, 408591160]

約数ペア:

[(1, 408591160), (2, 204295580), (4, 102147790), (5, 81718232), (8, 51073895), (10, 40859116), (20, 20429558), (31, 13180360), (40, 10214779), (43, 9502120), (62, 6590180), (79, 5172040), (86, 4751060), (97, 4212280), (124, 3295090), (155, 2636072), (158, 2586020), (172, 2375530), (194, 2106140), (215, 1900424), (248, 1647545), (310, 1318036), (316, 1293010), (344, 1187765), (388, 1053070), (395, 1034408), (430, 950212), (485, 842456), (620, 659018), (632, 646505), (776, 526535), (790, 517204), (860, 475106), (970, 421228), (1240, 329509), (1333, 306520), (1580, 258602), (1720, 237553), (1940, 210614), (2449, 166840), (2666, 153260), (3007, 135880), (3160, 129301), (3397, 120280), (3880, 105307), (4171, 97960), (4898, 83420), (5332, 76630), (6014, 67940), (6665, 61304), (6794, 60140), (7663, 53320), (8342, 48980), (9796, 41710), (10664, 38315), (12028, 33970), (12245, 33368), (13330, 30652), (13588, 30070), (15035, 27176), (15326, 26660), (16684, 24490), (16985, 24056), (19592, 20855)]