18698940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 62558496

約数和(自身を除く): 43859556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 61, 65, 78, 90, 117, 122, 130, 131, 156, 180, 183, 195, 234, 244, 260, 262, 305, 366, 390, 393, 468, 524, 549, 585, 610, 655, 732, 780, 786, 793, 915, 1098, 1170, 1179, 1220, 1310, 1572, 1586, 1703, 1830, 1965, 2196, 2340, 2358, 2379, 2620, 2745, 3172, 3406, 3660, 3930, 3965, 4716, 4758, 5109, 5490, 5895, 6812, 7137, 7860, 7930, 7991, 8515, 9516, 10218, 10980, 11790, 11895, 14274, 15327, 15860, 15982, 17030, 20436, 23580, 23790, 23973, 25545, 28548, 30654, 31964, 34060, 35685, 39955, 47580, 47946, 51090, 61308, 71370, 71919, 76635, 79910, 95892, 102180, 103883, 119865, 142740, 143838, 153270, 159820, 207766, 239730, 287676, 306540, 311649, 359595, 415532, 479460, 519415, 623298, 719190, 934947, 1038830, 1246596, 1438380, 1558245, 1869894, 2077660, 3116490, 3739788, 4674735, 6232980, 9349470, 18698940]

約数ペア:

[(1, 18698940), (2, 9349470), (3, 6232980), (4, 4674735), (5, 3739788), (6, 3116490), (9, 2077660), (10, 1869894), (12, 1558245), (13, 1438380), (15, 1246596), (18, 1038830), (20, 934947), (26, 719190), (30, 623298), (36, 519415), (39, 479460), (45, 415532), (52, 359595), (60, 311649), (61, 306540), (65, 287676), (78, 239730), (90, 207766), (117, 159820), (122, 153270), (130, 143838), (131, 142740), (156, 119865), (180, 103883), (183, 102180), (195, 95892), (234, 79910), (244, 76635), (260, 71919), (262, 71370), (305, 61308), (366, 51090), (390, 47946), (393, 47580), (468, 39955), (524, 35685), (549, 34060), (585, 31964), (610, 30654), (655, 28548), (732, 25545), (780, 23973), (786, 23790), (793, 23580), (915, 20436), (1098, 17030), (1170, 15982), (1179, 15860), (1220, 15327), (1310, 14274), (1572, 11895), (1586, 11790), (1703, 10980), (1830, 10218), (1965, 9516), (2196, 8515), (2340, 7991), (2358, 7930), (2379, 7860), (2620, 7137), (2745, 6812), (3172, 5895), (3406, 5490), (3660, 5109), (3930, 4758), (3965, 4716)]