28251540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:190

約数の個数: 144

約数和(自身を含む): 90994176

約数和(自身を除く): 62742636

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 61, 62, 83, 90, 93, 122, 124, 155, 166, 180, 183, 186, 244, 249, 279, 305, 310, 332, 366, 372, 415, 465, 498, 549, 558, 610, 620, 732, 747, 830, 915, 930, 996, 1098, 1116, 1220, 1245, 1395, 1494, 1660, 1830, 1860, 1891, 2196, 2490, 2573, 2745, 2790, 2988, 3660, 3735, 3782, 4980, 5063, 5146, 5490, 5580, 5673, 7470, 7564, 7719, 9455, 10126, 10292, 10980, 11346, 12865, 14940, 15189, 15438, 17019, 18910, 20252, 22692, 23157, 25315, 25730, 28365, 30378, 30876, 34038, 37820, 38595, 45567, 46314, 50630, 51460, 56730, 60756, 68076, 75945, 77190, 85095, 91134, 92628, 101260, 113460, 115785, 151890, 154380, 156953, 170190, 182268, 227835, 231570, 303780, 313906, 340380, 455670, 463140, 470859, 627812, 784765, 911340, 941718, 1412577, 1569530, 1883436, 2354295, 2825154, 3139060, 4708590, 5650308, 7062885, 9417180, 14125770, 28251540]

約数ペア:

[(1, 28251540), (2, 14125770), (3, 9417180), (4, 7062885), (5, 5650308), (6, 4708590), (9, 3139060), (10, 2825154), (12, 2354295), (15, 1883436), (18, 1569530), (20, 1412577), (30, 941718), (31, 911340), (36, 784765), (45, 627812), (60, 470859), (61, 463140), (62, 455670), (83, 340380), (90, 313906), (93, 303780), (122, 231570), (124, 227835), (155, 182268), (166, 170190), (180, 156953), (183, 154380), (186, 151890), (244, 115785), (249, 113460), (279, 101260), (305, 92628), (310, 91134), (332, 85095), (366, 77190), (372, 75945), (415, 68076), (465, 60756), (498, 56730), (549, 51460), (558, 50630), (610, 46314), (620, 45567), (732, 38595), (747, 37820), (830, 34038), (915, 30876), (930, 30378), (996, 28365), (1098, 25730), (1116, 25315), (1220, 23157), (1245, 22692), (1395, 20252), (1494, 18910), (1660, 17019), (1830, 15438), (1860, 15189), (1891, 14940), (2196, 12865), (2490, 11346), (2573, 10980), (2745, 10292), (2790, 10126), (2988, 9455), (3660, 7719), (3735, 7564), (3782, 7470), (4980, 5673), (5063, 5580), (5146, 5490)]