181312820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:202

約数の個数: 144

約数和(自身を含む): 462120960

約数和(自身を除く): 280808140

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 26, 34, 38, 52, 65, 68, 76, 85, 95, 127, 130, 170, 190, 221, 247, 254, 260, 289, 323, 340, 380, 442, 494, 508, 578, 635, 646, 884, 988, 1105, 1156, 1235, 1270, 1292, 1445, 1615, 1651, 2159, 2210, 2413, 2470, 2540, 2890, 3230, 3302, 3757, 4199, 4318, 4420, 4826, 4940, 5491, 5780, 6460, 6604, 7514, 8255, 8398, 8636, 9652, 10795, 10982, 12065, 15028, 16510, 16796, 18785, 20995, 21590, 21964, 24130, 27455, 28067, 31369, 33020, 36703, 37570, 41021, 41990, 43180, 48260, 54910, 56134, 62738, 71383, 73406, 75140, 82042, 83980, 109820, 112268, 125476, 140335, 142766, 146812, 156845, 164084, 183515, 205105, 280670, 285532, 313690, 356915, 367030, 410210, 477139, 533273, 561340, 627380, 697357, 713830, 734060, 820420, 954278, 1066546, 1394714, 1427660, 1908556, 2133092, 2385695, 2666365, 2789428, 3486785, 4771390, 5332730, 6973570, 9065641, 9542780, 10665460, 13947140, 18131282, 36262564, 45328205, 90656410, 181312820]

約数ペア:

[(1, 181312820), (2, 90656410), (4, 45328205), (5, 36262564), (10, 18131282), (13, 13947140), (17, 10665460), (19, 9542780), (20, 9065641), (26, 6973570), (34, 5332730), (38, 4771390), (52, 3486785), (65, 2789428), (68, 2666365), (76, 2385695), (85, 2133092), (95, 1908556), (127, 1427660), (130, 1394714), (170, 1066546), (190, 954278), (221, 820420), (247, 734060), (254, 713830), (260, 697357), (289, 627380), (323, 561340), (340, 533273), (380, 477139), (442, 410210), (494, 367030), (508, 356915), (578, 313690), (635, 285532), (646, 280670), (884, 205105), (988, 183515), (1105, 164084), (1156, 156845), (1235, 146812), (1270, 142766), (1292, 140335), (1445, 125476), (1615, 112268), (1651, 109820), (2159, 83980), (2210, 82042), (2413, 75140), (2470, 73406), (2540, 71383), (2890, 62738), (3230, 56134), (3302, 54910), (3757, 48260), (4199, 43180), (4318, 41990), (4420, 41021), (4826, 37570), (4940, 36703), (5491, 33020), (5780, 31369), (6460, 28067), (6604, 27455), (7514, 24130), (8255, 21964), (8398, 21590), (8636, 20995), (9652, 18785), (10795, 16796), (10982, 16510), (12065, 15028)]