21487830

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{463}}^1$

素因数の和:510

約数の個数: 128

約数和(自身を含む): 67350528

約数和(自身を除く): 45862698

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 17, 21, 26, 30, 34, 35, 39, 42, 51, 65, 70, 78, 85, 91, 102, 105, 119, 130, 170, 182, 195, 210, 221, 238, 255, 273, 357, 390, 442, 455, 463, 510, 546, 595, 663, 714, 910, 926, 1105, 1190, 1326, 1365, 1389, 1547, 1785, 2210, 2315, 2730, 2778, 3094, 3241, 3315, 3570, 4630, 4641, 6019, 6482, 6630, 6945, 7735, 7871, 9282, 9723, 12038, 13890, 15470, 15742, 16205, 18057, 19446, 23205, 23613, 30095, 32410, 36114, 39355, 42133, 46410, 47226, 48615, 55097, 60190, 78710, 84266, 90285, 97230, 102323, 110194, 118065, 126399, 165291, 180570, 204646, 210665, 236130, 252798, 275485, 306969, 330582, 421330, 511615, 550970, 613938, 631995, 716261, 826455, 1023230, 1263990, 1432522, 1534845, 1652910, 2148783, 3069690, 3581305, 4297566, 7162610, 10743915, 21487830]

約数ペア:

[(1, 21487830), (2, 10743915), (3, 7162610), (5, 4297566), (6, 3581305), (7, 3069690), (10, 2148783), (13, 1652910), (14, 1534845), (15, 1432522), (17, 1263990), (21, 1023230), (26, 826455), (30, 716261), (34, 631995), (35, 613938), (39, 550970), (42, 511615), (51, 421330), (65, 330582), (70, 306969), (78, 275485), (85, 252798), (91, 236130), (102, 210665), (105, 204646), (119, 180570), (130, 165291), (170, 126399), (182, 118065), (195, 110194), (210, 102323), (221, 97230), (238, 90285), (255, 84266), (273, 78710), (357, 60190), (390, 55097), (442, 48615), (455, 47226), (463, 46410), (510, 42133), (546, 39355), (595, 36114), (663, 32410), (714, 30095), (910, 23613), (926, 23205), (1105, 19446), (1190, 18057), (1326, 16205), (1365, 15742), (1389, 15470), (1547, 13890), (1785, 12038), (2210, 9723), (2315, 9282), (2730, 7871), (2778, 7735), (3094, 6945), (3241, 6630), (3315, 6482), (3570, 6019), (4630, 4641)]