400551840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{21397}}^1$

素因数の和:21431

約数の個数: 144

約数和(自身を含む): 1472096808

約数和(自身を除く): 1071544968

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 1040, 1170, 1248, 1440, 1560, 1872, 2080, 2340, 3120, 3744, 4680, 6240, 9360, 18720, 21397, 42794, 64191, 85588, 106985, 128382, 171176, 192573, 213970, 256764, 278161, 320955, 342352, 385146, 427940, 513528, 556322, 641910, 684704, 770292, 834483, 855880, 962865, 1027056, 1112644, 1283820, 1390805, 1540584, 1668966, 1711760, 1925730, 2054112, 2225288, 2503449, 2567640, 2781610, 3081168, 3337932, 3423520, 3851460, 4172415, 4450576, 5006898, 5135280, 5563220, 6162336, 6675864, 7702920, 8344830, 8901152, 10013796, 10270560, 11126440, 12517245, 13351728, 15405840, 16689660, 20027592, 22252880, 25034490, 26703456, 30811680, 33379320, 40055184, 44505760, 50068980, 66758640, 80110368, 100137960, 133517280, 200275920, 400551840]

約数ペア:

[(1, 400551840), (2, 200275920), (3, 133517280), (4, 100137960), (5, 80110368), (6, 66758640), (8, 50068980), (9, 44505760), (10, 40055184), (12, 33379320), (13, 30811680), (15, 26703456), (16, 25034490), (18, 22252880), (20, 20027592), (24, 16689660), (26, 15405840), (30, 13351728), (32, 12517245), (36, 11126440), (39, 10270560), (40, 10013796), (45, 8901152), (48, 8344830), (52, 7702920), (60, 6675864), (65, 6162336), (72, 5563220), (78, 5135280), (80, 5006898), (90, 4450576), (96, 4172415), (104, 3851460), (117, 3423520), (120, 3337932), (130, 3081168), (144, 2781610), (156, 2567640), (160, 2503449), (180, 2225288), (195, 2054112), (208, 1925730), (234, 1711760), (240, 1668966), (260, 1540584), (288, 1390805), (312, 1283820), (360, 1112644), (390, 1027056), (416, 962865), (468, 855880), (480, 834483), (520, 770292), (585, 684704), (624, 641910), (720, 556322), (780, 513528), (936, 427940), (1040, 385146), (1170, 342352), (1248, 320955), (1440, 278161), (1560, 256764), (1872, 213970), (2080, 192573), (2340, 171176), (3120, 128382), (3744, 106985), (4680, 85588), (6240, 64191), (9360, 42794), (18720, 21397)]