123456420

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37}}^2\times {\mathrm{167}}^1$

素因数の和:259

約数の個数: 144

約数和(自身を含む): 397111680

約数和(自身を除く): 273655260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 90, 108, 111, 135, 148, 167, 180, 185, 222, 270, 333, 334, 370, 444, 501, 540, 555, 666, 668, 740, 835, 999, 1002, 1110, 1332, 1369, 1503, 1665, 1670, 1998, 2004, 2220, 2505, 2738, 3006, 3330, 3340, 3996, 4107, 4509, 4995, 5010, 5476, 6012, 6179, 6660, 6845, 7515, 8214, 9018, 9990, 10020, 12321, 12358, 13690, 15030, 16428, 18036, 18537, 19980, 20535, 22545, 24642, 24716, 27380, 30060, 30895, 36963, 37074, 41070, 45090, 49284, 55611, 61605, 61790, 73926, 74148, 82140, 90180, 92685, 111222, 123210, 123580, 147852, 166833, 184815, 185370, 222444, 228623, 246420, 278055, 333666, 369630, 370740, 457246, 556110, 667332, 685869, 739260, 834165, 914492, 1112220, 1143115, 1371738, 1668330, 2057607, 2286230, 2743476, 3336660, 3429345, 4115214, 4572460, 6172821, 6858690, 8230428, 10288035, 12345642, 13717380, 20576070, 24691284, 30864105, 41152140, 61728210, 123456420]

約数ペア:

[(1, 123456420), (2, 61728210), (3, 41152140), (4, 30864105), (5, 24691284), (6, 20576070), (9, 13717380), (10, 12345642), (12, 10288035), (15, 8230428), (18, 6858690), (20, 6172821), (27, 4572460), (30, 4115214), (36, 3429345), (37, 3336660), (45, 2743476), (54, 2286230), (60, 2057607), (74, 1668330), (90, 1371738), (108, 1143115), (111, 1112220), (135, 914492), (148, 834165), (167, 739260), (180, 685869), (185, 667332), (222, 556110), (270, 457246), (333, 370740), (334, 369630), (370, 333666), (444, 278055), (501, 246420), (540, 228623), (555, 222444), (666, 185370), (668, 184815), (740, 166833), (835, 147852), (999, 123580), (1002, 123210), (1110, 111222), (1332, 92685), (1369, 90180), (1503, 82140), (1665, 74148), (1670, 73926), (1998, 61790), (2004, 61605), (2220, 55611), (2505, 49284), (2738, 45090), (3006, 41070), (3330, 37074), (3340, 36963), (3996, 30895), (4107, 30060), (4509, 27380), (4995, 24716), (5010, 24642), (5476, 22545), (6012, 20535), (6179, 19980), (6660, 18537), (6845, 18036), (7515, 16428), (8214, 15030), (9018, 13690), (9990, 12358), (10020, 12321)]